Dynamic torque testing method of crossed roller bearing special for harmonic reducer

Abstract

The invention discloses a dynamic torque test method of a special crossed roller bearing for a harmonic reducer, wherein the dynamic torque test method comprises the following steps: a torque loadingdisc is provided with a cylindrical pin in a close fit manner, a tested crossed roller bearing sleeves the cylindrical pin in an empty manner, and the outer diameter and the inner diameter of the bearing are respectively 55 mm and 90 mm; a lifting motor rotates forwards to enable double clamping jaws to descend in place; a horizontal cylinder is controlled to drive the two clamping jaws to synchronously embrace an outer ring of the bearing, the embraced, clamped and fixed bearing and the torque loading disc share the same circle center, and the embracing mode is an extrusion mode; the loadingmotor is started to drive the torque loading disc to rotate; the driving torque is transmitted to an inner ring, the inner ring stops rotating after rotating by 720 degrees clockwise and then rotatingby 720 degrees anticlockwise, the rotating speed of the inner ring is controlled to be 2 rpm, and when the range value and the average value of the torque are smaller than 0.2 N*m and 1.2 N*m respectively, it is shown that the tested crossed roller bearing rotates smoothly and is proper in rotating tightness. The bearing clamping stations tested in batches according to the method are high in consistency, the clamping concentricity adjusting procedure can be omitted, and the detection precision is high.

Description

【Technical field】 [0001] The invention relates to a dynamic torque test method for a cross-roller bearing specially used for a harmonic reducer, and belongs to the technical field of dynamic torque test for a cross-roller bearing for a harmonic reducer. 【Background technique】 [0002] The dynamic torque of the cross roller bearing used in the harmonic reducer is tested by artificially simulating the rotation in the prior art. The specific test operation method is as follows: [0003] Hold the outer ring of the crossed roller bearing with one hand and try to rotate the inner ring with the other hand. Whether it feels light or heavy, whether the rotation is smooth, and whether there is any stuck point in the whole ring can be used as a sample product to determine whether it is qualified. However, manual testing alone has the disadvantages of strong randomness, low testing accuracy, and low testing efficiency. When large-scale crossed roller bearings are continuously tested ma...

AI Technical Summary

Problems solved by technology

[0003] Hold the outer ring of the crossed roller bearing with one hand and try to rotate the inner ring with the other hand. Whether it feels light or heavy, whether the rotation is smooth, and whether there is any stuck point in the whole ring can be used as a sample product to determine whether it is qualified. However, manual testing alone has the disadvantages of strong randomness, low testing accuracy, and low testing efficiency. When large-scale crossed roller bearings are continuously tested manually, the physical strength of the testers will be high.

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